Intel rebrands the SFF-8639 connector on its SSD 750 Series to U.2 - HardwareZone.com.sg
Intel 750 Series 2.5" U.2 (M.2 adaptor) 400GB PCI-Express 3.0 x4 MLC Internal Solid State Drive (SSD) SSDPE2MW400G4M2 - Newegg.com
H1111Z Add On Card PCI E 3.0 x4 Lane to U.2 U2 Kit SFF 8639 Host Adapter for Intel Motherboard 750 2.5" NVMe PCIe SSD Riser Card|Add On Cards| - AliExpress